Products, Materials & Tools | Mar 20, 2012

TI Introduces Industry’s First Dual Mode Off-Line Controller for Non-Dimmable LED Lighting

Texas Instruments Incorporated (TI) (NASDAQ: TXN) today introduced a new off-line primary side sensing controller to its portfolio of non-dimming LED drivers. The new TPS92310 AC/DC constant current driver with power factor correction (PFC) reduces cost and shrinks-to-fit in high-power LED retrofit bulbs, including A19, PAR30/38 and GU10.

The TPS92310 is the first in a family of primary side, regulated controllers with PFC.  In May, TI will offer the TPS92311 with similar features and an integrated, 600V power FET with avalanche energy capability, further reducing solution size and component count. The TPS92310 and TPS92311 join TI’s portfolio of off-line LED lighting controllers that include the National LM3445, the industry’s first TRIAC dimmable LED driver with both full-range and flicker-free dimming.

Key features and benefits:
• AC input voltage supports all common line voltages (100V, 120V, 230V, 240V, 277V), including U.S. commercial.
• True primary side sensing and regulation provides accurate LED current regulation, eliminating optocoupler, secondary error amplifier and associated passive components. Bill of materials is reduced by 14 percent or more compared to today’s solutions.
• Select from dual operating modes:

o Adaptive constant on-time (COT) provides inherent power factor correction with no external components. PFC reduces the EMI signature to ensure regulatory approval.
o   Peak current control provides low LED current ripple to minimize stroboscopic effects.

• Critical-Conduction-Mode (CCM) with Zero-Current Detection (ZCD) provides valley switching for improved power conversion efficiency and low-EMI.

• Cycle-by-cycle current limit, over/under voltage protection and thermal shutdown protect the LED driver and user against fault and abnormal operating conditions.

Availability, packaging and pricing:
The TPS92310 is available in volume now from TI and its authorized distributors.  Offered in a 10-pin MSOP package, the suggested retail price is $0.49 in 1,000-unit quantities.

Find out more about TI’s LED lighting portfolio:
• Order samples and an evaluation module of the new LED drivers: http://www.ti.com/tps92310-preu and www.ti.com/tps92311-pr
• Get more information on all of TI’s LED drivers: www.ti.com/lighting-pr
• Ask questions and share knowledge in the LED forum in the TI E2E™ Community: www.ti.com/ledforum-pr
• Download LED reference designs from TI’s PowerLab™ Design Library: www.ti.com/powerlab-pr
• Use TI’s AC/DC LED driver online navigation tool to create a complete LED drive solution: www.national.com/en/led/bulb/selectortool.html

About Texas Instruments:
Texas Instruments semiconductor innovations help 90,000 customers unlock the possibilities of the world as it could be – smarter, safer, greener, healthier and more fun. Our commitment to building a better future is ingrained in everything we do – from the responsible manufacturing of our semiconductors, to caring for our employees, to giving back inside our communities. This is just the beginning of our story.

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